ISR11 S0CCER - A Concordance Program chapter Guy E. Hochgesang Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. III-~ the context in which it occurs, and the number of the card in which it is included. If a restriction or selection list has been specified by the use of a RESTRICT or SE[OCRerr]CT control card, this list is scanned before the token is written on the intermediate tape. If the RESTRICT card is used, tokens appearing on the restriction list are not written on SMRTAP; and if a selection list is specified by a SEI[OCRerr]CT card, only those tokens appearing on the selection list are written on SMRTAP. Thus the use of a restriction list provides a method for excluding c[OCRerr]nmon or unwanted words (ttthe1t, 11oft1, 11andt1 etc.) from the concordance, while the use of a selection list enables one to include only certain words in the concordance, excluding all others. Only one of the two types of lists may be active during a single run. It is permissible not t[OCRerr] use either type of list, i.e., to use neither the RESTRICT or SE[OCRerr]CT control card. When S[OCRerr]CCER hits a card with [OCRerr]l*ST[OCRerr]p:I left-justified in columns 1-6, or an end-of-file on the INPUT tape, the assumption is made that the entire text has been processed. The tokens appearing on SMRTAF are then sorted into alphabetical order, using the scratch tapes, as described in Part 3. After the sort of SMRTAP some control information about the sort is written on the [OCRerr]UTPUT tape. This is further described in Part 6B. The concordance is then written on the [OCRerr]UTPUT tape following the complete listing of the text already produced. The concordance consists of an alphabetical listing of the tokens on SMRTAP, along with the context in which the tokens originally occurred, and, the number of the card from which the tokens were taken. The number of occurrences (i.e., number of tokens) of each type is also given. Figures 1 and 2 show fragmentary examples of a typical text listing and concordance. While writing the concordance on the [OCRerr]UTPUT tape, S[OCRerr]CCER keeps track of some useful statistics, which are written out following the concordance